Nut-lock.



.No. s425766.) PATENTBD JAN. 29, 1907.

y 11 A. CHASE.

lNUT Loox. Y 1 PPPPPPPPPPP H LLLL o1'. 111111 e.

Wmme@ UNITED -sTATEs PATENT OFFICE...

V'FREDERICK A. oEAsE, or PLYMOTH, PENNSYLVANIA.-

To all whom t ina/y concern.:

Be it knoim that I, FREDERIC/KA. CEAsE, a citizen of the United States of America, residing at Plymouth, in the county of Luzerne and State of Pennsylvania, 'have invented new and useful Improvements in Nut-Locks',V

of which thefollowing is aspeciiication.

This-invention relates 'to' nut-locks, its object'being to provide simple and effective means, for locking a nut against retrograde movementupona bolt, the construction being such as to adapt-the device to be supplied. at a low cost and thrown outof operation in Ia convenient manner to permit the nut. to-be -tightened upon the bolt 'and removed. therefrom when occasion requires.

In the accompanying drawings, Figure 1 is a front elevation of a nut and bolt equipped with my 1nvent1on.\ Fig. 2 is a front-to-rear section through the nut, showing the same applied to the bolt, the latter appearing in side elevation. Fig. 3 is a detail view of the locking-key." l'

Referring-to the drawings, the `numeral 1 designates a bolt of ordinary construction provided/with a threaded portion 2,-for the reception'ofa nut 3. The nut 3 is provided withthe usualthreaded bore 4 to receive and engagel the bolt and in' accordance with the presentinvention is formed with a radial passage 5, eo1nmunieating at its inner 'end with said bore and at its outer end with a nearly cylindrical seat or opening 6, extend-- for use the nut is iirst screwed upon the bolt in the usual manner, after which the ke)v is slid endwlse into lts keepe' `Sipeciiicaton of Letters Patent. Application med october 13,'1906. serial No. 3383095' ,is claime of said passage, and a key jeetingfrom sai :iening 6 and' the tongue ll bent obliqne'g, aterally, and

"demented Jan. 29, 1 907.

:downwardly engage the adjacent threads 2 ofthe bolts l, the tongue being arranged to bear against the inclined wall 7, whereby it is' reinforced to prevent it from bending out of engagement' with the threads under strain. After the key has'been applied the'front and rear faces of the lnut adjacentto the ends of the opening 6 are indented, as shown at 12, by' means of a punch, thus producing inward ,projections-13, which engage the endsof the ody portion 8 of the key and hold the same from outward-m'ove'mentl and displacement.

The lower edge ofthe' entire surface of the bit 9 impinges against the surfaces. of the threads 2, but not sufficiently to lock the nut against movement, the locking action being performed by the tongue 11. The tongue A,

will act to firmly and securely hold the nut against retro rade rotation, and the form of the same an the passage is such that a' match-stem or suitable tool may be inserted to force the tongue bac-k to a position inline with the body of the bit, thus releasin the nut may be 4screwed off the bolt when occasion requires, as in disc' onnectingl the .parts when repairs are tobe made tothe tracksl of railways. i

' Havin thus described the invention',what

as new is- In a nut-lock, the combination'of a bolt, a

inut 'provided with a radial passage communicating at its inner end with the threadedbore thereof and having at its outer'endan opening communicating with the outer end comprising a body portion fittedinsaid opening, and a bit prosage, said bit-being incised to forni-'a tongue to engage the threads of the bolt, the body` of the nut being ,provided with projeetions'fat the ends of the opening to engage and-hold the body of the'key from displacement In testimony whereof I affix-my signature inpresence of two witnesses.

' FREDERICK A.'-CEA SE. Vitnesses;

- JOHN J. HOWARD,

GEORGEA W. KETTLE.

it from engagement with the threads, so t latbody portion into the pas! 

